Other divalent and trivalent metal ions

Other divalent and trivalent metal ions refers to a broad category of inorganic cations, including essential trace elements and toxic heavy metals, that serve as therapeutic targets primarily in cases of toxicity or metabolic imbalance (StatPearls, 'Chelation Therapy', 2023). This group encompasses divalent ions such as lead (Pb2+), mercury (Hg2+), and copper (Cu2+), as well as trivalent ions like iron (Fe3+) and aluminum (Al3+) (NIH, 'Metal Toxicity', 2022). Biologically, these ions often function as critical enzyme cofactors or structural elements in proteins, but their accumulation can lead to oxidative stress and organ damage (PubMed, PMC6412743). Pharmacological intervention typically involves chelating agents like EDTA, deferoxamine, or penicillamine, which sequester these ions into stable complexes for renal or fecal excretion (PubChem, 'Chelating Agents'). While essential for treating conditions like Wilson's disease or lead poisoning, targeting these ions carries risks, including the depletion of necessary minerals and potential nephrotoxicity (Mayo Clinic, 'Chelation Therapy'). Additionally, certain trivalent ions like gadolinium are used as contrast agents, though they require careful management to avoid systemic deposition (FDA, 'Gadolinium-based Contrast Agents').

Other names

Divalent metal cationsTrivalent metal cationsHeavy metal ionsTrace metal elementsMultivalent metal ions

Chelation therapy involves the administration of ligands that bind to divalent or trivalent metal ions to form stable, ring-like coordination complexes. These complexes are typically water-soluble and chemically inert, preventing the metal ions from interacting with biological molecules and facilitating their excretion through the kidneys or bile (StatPearls, 2023).